US1283483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement material and method of producing.
Assignee: Dwight & Lloyd Metallurgical Co
•
Filing: 1912-12-30
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Granted: 1918-11-05
•
Expires: 1932-12-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Dwight
- 👤 Richard Lewis Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:35
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/434
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-11-04 | 1922-05-06 | 1922-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-11-04 | 1926-05-06 | 1926-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-11-04 | 1930-05-06 | 1930-11-05 | $7700.00 | Window Closed / Lapsed |